Zn85-40.5kv/1250-25ka High Voltage Indoor Vacuum Circuit Breaker Intelligent Switchgear

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Electric Type
• Model NO.: ZN85-40.5
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker
• Certification: ISO9001-2000, Type Test Report
• Modelnumber: Zn85-40.5
• Mechanical Life: 10000 Times
• Selling Units: Single Item
• Product Name: Indoor High-Voltage Vacuum Circuit Breaker
• Rated Current: 1250A/1600A/2000A
• Model: Zn85-40.5
• Rated Breaking: 25ka/31.5ka Current
• Brand: Zikai
• Rated Frequency: 50Hz
• Rated Voltage: 40.5kv
• Transport Package: Wooden Case
• Specification: 150*110*132
• Trademark: Zikai
• Origin: Zhejiang, China
• HS Code: 8535210000

Product Description

Product Description

Vacuum circuit breaker

 ZN85-40.5  Intdoor high voltage vacuum circuit breaker

       The ZN85-40.5 series indoor high-voltage vacuum circuit breaker (hereinafter referred to as the circuit breaker) is suitable for use in three-phase AC 50Hz, rated voltage 40.5kV power systems, and can be used for load current, overload current, and fault current in industrial and mining enterprises, power plants, and substations. The circuit breaker and operating mechanism are arranged vertically, effectively reducing the depth of the circuit breaker.
      The three-phase arc extinguishing chamber and associated charged body are isolated by three independent epoxy resin insulation cylinders, forming a composite insulation structure. The circuit breaker meets the requirements of air distance and creepage distance under normal operating conditions, and effectively reduces the volume of the circuit breaker. The main electrical circuit vacuum arc extinguishing chamber and the dynamic and static conductive connection are installed inside the insulation cylinder, with a phase spacing of only 300mm. The main circuit electrical connections are all fixed connections, which have high reliability. The insulation cylinder is installed above the circuit breaker frame.
      The spring operated mechanism specially designed for this new type of circuit breaker is installed inside the circuit breaker frame, and its structural characteristics are more suitable for the upper and lower layout of the circuit breaker, and become an integral part of the overall structure of the circuit breaker. The mechanism design is simple, and the output curve and its performance are more suitable for the characteristics and requirements of 40.5kV vacuum circuit breakers. The overall layout is reasonable, beautiful, and concise.
      Small size, flexible operation, reliable electrical performance, long service life, easy maintenance, and maintenance free mechanism.
      This circuit breaker is suitable for frequent operation, various occasions, and places with harsh operating conditions.

NO.	project	Unit	Data
1	Rated voltage	KV	40.5
2	1minute power frequency withstand voltage (effective value)		95
3	Lightning impulse withstand voltage (peak value)	kV	185
4	Rated frequency	Hz	50
5	Rated current	A	1250, 1600, 2000
6	Rated short  time withstand current	kA	25, 31.5
7	Rated peak withstand current	kA	63, 80
8	Rated short circuit duration	S	4
9	Rated short circuit breaking current	kA	25, 31.5
10	Rated short circuit closing current	kA	63, 80
11	Rated operating sequence		O 0.3s CO 180s CO
12	Cut off time	ms	<80
13	Rated short circuit breaking current breaking times	order	20
14	Single capacitor bank breaking current	A	630
15	Back to back capacitor bank breaking current	A	400
16	Rated operating voltage	V	AC110, 220; DC110,220
17	Mechanical lifespan	order	10000

        Shanghai Zikai Electric Co., Ltd. is a professional manufacturer specializing in high-voltage electrical equipment. We provide integrated solutions across design, R&D, manufacturing, and technical support. Our product portfolio includes vacuum circuit breakers, high and low-voltage switchgear, gas-insulated switchgear, ring main units, prefabricated substations, transformers, and related electrical devices—all engineered to meet diverse demands of modern power systems.

With years of expertise in production management and a deep understanding of international and regional compliance standards, our equipment has delivered reliable performance in thousands of projects across the globe. We offer tailored electrical solutions to ensure stable operation even under extreme conditions, providing confidence and security for your projects.

Our advantages:

1.Over 15 years of production experience

2.Professional engineers provide one-on-one support

3.Strict quality control throughout the process

4.highly competitive pricing

5.Efficient After-sales Support

Our Customers & Customer Reviews

Cooperation Cases

Packaging & Shipping

FAQ

Q1:Are you a trade company or a manufacturer?

Shanghai Zikai Electric Co., Ltd. is a production and sales-oriented enterprise focusing on the production of power equipment, integrating design, research and development, manufacturing and technical services.

 

Q2:What are the main products of your company?

Our company specializes in producing and selling high-quality electrical equipment, including vacuum circuit breakers, isolating switches, grounding switches, and various power accessories. Our flagship product is the ZW32-12 outdoor high-voltage vacuum circuit breaker, widely used for protection and control in power distribution systems.

 

Q3:How can I purchase your products?

You can place an order online through our website or contact our sales team for more product information and quotations. We support multiple payment methods and provide worldwide shipping services.

 

Q4:How do you ensure the quality of your products?

We strictly adhere to international standards and quality management systems. All products undergo rigorous testing and inspection before leaving the factory. We also offer a product quality guarantee period to ensure that the products you purchase meet your expected performance.

 

Q5:Do you offer customization services?

Yes, we can provide customized services according to the specific needs of our customers. Whether it's product specifications, design, or functionality, our technical team can work with you to develop solutions that meet your requirements.

 

Q6:Can we visit your factory?

Absolutely! We welcome customers to visit our production facilities and learn about our manufacturing processes and quality control measures. Please schedule an appointment in advance, and we will arrange for a professional team to host and accompany you during the visit.

 

If you have any other questions or need further information, please feel free to contact us. We are dedicated to providing you with the best service.